Tensile fracture dynamics and intrinsic plasticity of metallic glasses

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	Tensile fracture dynamics and intrinsic plasticity of metallic glasses
	J. W. Cui; M. Calin; J. Eckert; Z. F. Zhang
	2013
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	102 期号:3
摘要	Under tensile tests of metallic glasses (MGs) subjected to annealing below glass transition temperature T-g, ductile-to-brittle transition (DBT) occurs due to structural relaxation, which results in more ordered atomic packing and decrease of glass fraction phi. DBT is observed simultaneously with fracture mechanism transition: shear banding to cracking. All MG samples annealed under different temperature were also restricted to shear banding and cracking separately under small-aspect-ratio compression and compact tension avoiding DBT. Experimental results prove that as annealing temperature increases (or glass fraction phi decreases), strength for shear banding increases, while strength for cracking decreases; as phi becomes less than critical state phi(DBT), MG samples tend to cracking instead of shear banding. So, phi(DBT) is proposed as an important parameter to characterize the intrinsic plasticity of various MGs and to conform to the previous factors soundly. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789439]
部门归属	[cui, j. w. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [calin, m. ; eckert, j.] ifw dresden, inst complex mat, d-01069 dresden, germany. [eckert, j.] tech univ dresden, inst mat sci, d-01062 dresden, germany. ; zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; zhfzhang@imr.ac.cn
关键词	Elastic Properties Amorphous-alloys Embrittlement Deformation Brittle
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71177
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. W. Cui,M. Calin,J. Eckert,et al. Tensile fracture dynamics and intrinsic plasticity of metallic glasses[J]. Applied Physics Letters,2013,102(3).
APA	J. W. Cui,M. Calin,J. Eckert,&Z. F. Zhang.(2013).Tensile fracture dynamics and intrinsic plasticity of metallic glasses.Applied Physics Letters,102(3).
MLA	J. W. Cui,et al."Tensile fracture dynamics and intrinsic plasticity of metallic glasses".Applied Physics Letters 102.3(2013).